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A154032
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Number of planar triangular n X n X n nonnegative integer grids symmetric under 120 degree rotation with every similarly oriented 2 X 2 X 2 subtriangle summing to 3.
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0
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1, 2, 10, 2, 3, 11, 3, 2, 12, 2, 3, 11, 3, 2, 12, 2, 3, 11, 3, 2, 12, 2, 3, 11, 3, 2, 12, 2, 3, 11, 3, 2, 12, 2, 3, 11, 3, 2, 12, 2, 3, 11, 3, 2, 12, 2, 3, 11, 3, 2, 12, 2, 3, 11, 3, 2, 12, 2, 3
(list; graph; refs; listen; history; internal format)
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OFFSET
| 2,2
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COMMENTS
| Pattern 2 3 11 3 2 12 starts at n=5 and continues through at least n=60.
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EXAMPLE
| Maximal zeros solution for n=11
............3
...........0.0
..........2.1.2
.........0.1.1.0
........2.1.1.1.2
.......0.1.1.1.1.0
......2.1.1.1.1.1.2
.....0.1.1.1.1.1.1.0
....2.1.1.1.1.1.1.1.2
...0.1.1.1.1.1.1.1.1.0
..3.0.2.0.2.0.2.0.2.0.3
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CROSSREFS
| Sequence in context: A051242 A069287 A102775 * A010700 A121521 A188635
Adjacent sequences: A154029 A154030 A154031 * A154033 A154034 A154035
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KEYWORD
| nonn
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AUTHOR
| R. H. Hardin (rhhardin(AT)att.net) Jan 04 2009
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